package cece.controller;

import cece.config.AlipayProperties;
import com.alipay.api.AlipayApiException;
import com.alipay.api.internal.util.AlipaySignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * @Auther Programmer
 * @Date 2020-05-25 20:08
 */
@RequestMapping("/result")
@Controller
public class OrderResultController {
	@Autowired
	private AlipayProperties properties;

	@GetMapping("/returnurl")
	public void returnResult(HttpServletRequest request, HttpServletResponse response) throws IOException, AlipayApiException {
		//获取支付宝GET过来反馈信息
		Map<String, String> params = new HashMap<String, String>();
		Map<String, String[]> requestParams = request.getParameterMap();
		for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
			String name = (String) iter.next();
			String[] values = (String[]) requestParams.get(name);
			String valueStr = "";
			for (int i = 0; i < values.length; i++) {
				valueStr = (i == values.length - 1) ? valueStr + values[i]
						: valueStr + values[i] + ",";
			}
			//乱码解决，这段代码在出现乱码时使用
			valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
			params.put(name, valueStr);
		}

		boolean signVerified = AlipaySignature.rsaCheckV1(params, properties.getAlipayPublicKey(), properties.getCharset(), properties.getSignType()); //调用SDK验证签名

		//——请在这里编写您的程序（以下代码仅作参考）——
		if (signVerified) {
			//商户订单号
			String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

			//支付宝交易号
			String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

			//付款金额
			String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"), "UTF-8");

			System.out.println("trade_no:" + trade_no + "<br/>out_trade_no:" + out_trade_no + "<br/>total_amount:" + total_amount);
		} else {
			System.out.println("验签失败");
		}
		response.setContentType("text/html;charset=UTF-8");
		response.getWriter().write("<!DOCTYPE html>\n" +
				"<html>\n" +
				"\t<head>\n" +
				"\t\t<meta charset=\"UTF-8\">\n" +
				"\t\t<title>倒计时五秒</title>\n" +
				"\t\t<script>\n" +
				"\t\t\t//使用匿名函数方法\n" +
				"\t\t\tfunction countDown(){\n" +
				"\t\t\t\t\n" +
				"\t\t\t\tvar time = document.getElementById(\"Time\");\n" +
				"\t\t\t\t//alert(time.innerHTML);\n" +
				"\t\t\t\t//获取到id为time标签中的内容，现进行判断\n" +
				"\t\t\t\tif(time.innerHTML <= 0){\n" +
				"\t\t\t\t\t//等于0时清除计时\n" +
				"\t\t\t\t\twindow.location.href=\"http://localhost:8080\";\n" +
				"\t\t\t\t}else{\n" +
				"\t\t\t\t\ttime.innerHTML = time.innerHTML-1;\n" +
				"\t\t\t\t}\n" +
				"\t\t\t}\n" +
				"\t\t\t//1000毫秒调用一次\n" +
				"\t\t\twindow.setInterval(\"countDown()\",1000);\n" +
				"\t\t</script>\n" +
				"\t\t<style>\n" +
				"\t\t\t#Time,#sec{\n" +
				"\t\t\t\tfont-size: 40px;\n" +
				"\t\t\t\ttext-align: center;\n" +
				"\t\t\t\t\n" +
				"\t\t\t}\n" +
				"\t\t</style>\n" +
				"\t</head>\n" +
				"\t<body>\n" +
				"\t\t<span style='font-size:22px;color:black;text-align:center'><a href='http://localhost:8080'>支付成功,继续Shopping~~~</a></span>\n" +
				"\t\t<div><span id=\"Time\" style='color:red'>10</span><span id=\"sec\">秒后自动跳转...</span>\n" +
				"\t</body></div>\n" +
				"\t\t<!--<p id=\"Time\">5</p><span>秒</span>-->\n" +
				"\t</body>\n" +
				"</html>");
	}

	@PostMapping("/notifyurl")
	public void returnNotiryUrl(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException, AlipayApiException {
		//获取支付宝POST过来反馈信息
		Map<String, String> params = new HashMap<String, String>();
		Map<String, String[]> requestParams = request.getParameterMap();
		for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
			String name = (String) iter.next();
			String[] values = (String[]) requestParams.get(name);
			String valueStr = "";
			for (int i = 0; i < values.length; i++) {
				valueStr = (i == values.length - 1) ? valueStr + values[i]
						: valueStr + values[i] + ",";
			}
			//乱码解决，这段代码在出现乱码时使用
			//valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
			params.put(name, valueStr);
		}

		boolean signVerified = AlipaySignature.rsaCheckV1(params, properties.getAlipayPublicKey(), properties.getCharset(), properties.getSignType()); //调用SDK验证签名

		//——请在这里编写您的程序（以下代码仅作参考）——
	
	/* 实际验证过程建议商户务必添加以下校验：
	1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
	2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
	3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
	4、验证app_id是否为该商户本身。
	*/
		try {
			if (signVerified) {//验证成功
				//商户订单号
				String out_trade_no = null;
				out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");


				//支付宝交易号
				String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

				//交易状态
				String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"), "UTF-8");
				System.out.println("out_trade_no:" + out_trade_no);
				System.out.println("trade_no:" + trade_no);
				System.out.println("订单状态trade_status:" + trade_status);

				if (trade_status.equals("TRADE_FINISHED")) {
					//判断该笔订单是否在商户网站中已经做过处理
					//如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
					//如果有做过处理，不执行商户的业务程序

					//注意：
					//退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
				} else if (trade_status.equals("TRADE_SUCCESS")) {
					//判断该笔订单是否在商户网站中已经做过处理
					//如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
					//如果有做过处理，不执行商户的业务程序

					//注意：
					//付款完成后，支付宝系统发送该交易状态通知
				}

				System.out.println("success");

			} else {//验证失败
				System.out.println("fail");

				//调试用，写文本函数记录程序运行情况是否正常
				//String sWord = AlipaySignature.getSignCheckContentV1(params);
				//AlipayConfig.logResult(sWord);
			}
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
	}
}
